I am doing the prepare your first contract tutorial on subtrate and i am getting the following error ERROR: Your wasm-opt version is 91, but we require a version >= 99.Can anyone please tell me how to solve it .
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1The following should help: docs.porta.network/developer-guide/smart-contracts/… and github.com/paritytech/cargo-contract/issues/272 and stackoverflow.com/questions/72905893/…– Bruno ♦Commented Aug 2, 2022 at 19:12
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1 Answer
wasm-opt is part of the binaryen package. You can find out your local version by executing wasm-opt --version.
In the cargo-contract installation instructions and the error message that you are getting there are notes on how to get a new version.
It comes down to installing binaryen in a version >= 99:
- Debian/Ubuntu:
apt-get install binaryen - Homebrew:
brew install binaryen - Arch Linux:
pacman -S binaryen - Windows: binary releases are available
- There is also
npm i wasm-opt -g.
If none of this works you can download a binary release here and put the wasm-opt binary into your environment.
